react-native-eth-typed-data/lib/verify.js

A library to simplifiy interacting with and signing EIP712 typed data

"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.verify = verify;
exports.verifyRawSignatureFromAddress = verifyRawSignatureFromAddress;

var _ethers = require("ethers");

var _buffer = require("buffer");

var _Domain = _interopRequireDefault(require("./Domain"));

/**
 * Verify that a particular object was signed by a given
 */
function verify(request, signature, address) {
  var _EIP712Domain$fromSig = _Domain["default"].fromSignatureRequest(request),
      domain = _EIP712Domain$fromSig.domain,
      message = _EIP712Domain$fromSig.message;

  if (!message.verifySignature(signature, address)) {
    throw new Error('Invalid signature for address over this object');
  }

  return {
    domain: domain,
    message: message
  };
}
/**
 * Verify a signed hash made by the owner of a particular ethereum address
 * returning true if the signature is valid, and false otherwise
 * @param   {Buffer}  data qq
 * @param   {Object}  signature 
 * @param   {String}  address 
 * @returns {Boolean} indicator of the signature's validity
 */


function verifyRawSignatureFromAddress(data, signature, address) {
  var normalizedAddress = _ethers.ethers.utils.getAddress(address);

  return _ethers.ethers.utils.verifyMessage(_ethers.ethers.utils.arrayify(data), signature) === normalizedAddress;
}

;